23057681 has 2 divisors, whose sum is σ = 23057682. Its totient is φ = 23057680.

The previous prime is 23057669. The next prime is 23057687. The reversal of 23057681 is 18675032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22648081 + 409600 = 4759^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 23057681 - 2¹⁴ = 23041297 is a prime.

It is a super-2 number, since 2×23057681² = 1063313306195522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23057687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11528840 + 11528841.

It is an arithmetic number, because the mean of its divisors is an integer number (11528841).

Almost surely, 2^23057681 is an apocalyptic number.

It is an amenable number.

23057681 is a deficient number, since it is larger than the sum of its proper divisors (1).

23057681 is an equidigital number, since it uses as much as digits as its factorization.

23057681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 23057681 is about 4801.8414176230. The cubic root of 23057681 is about 284.6242344404.

The spelling of 23057681 in words is "twenty-three million, fifty-seven thousand, six hundred eighty-one".